617859489271 has 2 divisors, whose sum is σ = 617859489272. Its totient is φ = 617859489270.

The previous prime is 617859489257. The next prime is 617859489337. The reversal of 617859489271 is 172984958716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 617859489271 - 2¹³ = 617859481079 is a prime.

It is a super-2 number, since 2×617859489271² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 617859489197 and 617859489206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617829489271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308929744635 + 308929744636.

It is an arithmetic number, because the mean of its divisors is an integer number (308929744636).

Almost surely, 2^617859489271 is an apocalyptic number.

617859489271 is a deficient number, since it is larger than the sum of its proper divisors (1).

617859489271 is an equidigital number, since it uses as much as digits as its factorization.

617859489271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 67.

The spelling of 617859489271 in words is "six hundred seventeen billion, eight hundred fifty-nine million, four hundred eighty-nine thousand, two hundred seventy-one".